79134518018 has 4 divisors (see below), whose sum is σ = 118701777030. Its totient is φ = 39567259008.

The previous prime is 79134517993. The next prime is 79134518039. The reversal of 79134518018 is 81081543197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77744495929 + 1390022089 = 278827^2 + 37283^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19783629503 + ... + 19783629506.

Almost surely, 2^79134518018 is an apocalyptic number.

79134518018 is a deficient number, since it is larger than the sum of its proper divisors (39567259012).

79134518018 is a wasteful number, since it uses less digits than its factorization.

79134518018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39567259011.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 79134518018 in words is "seventy-nine billion, one hundred thirty-four million, five hundred eighteen thousand, eighteen".